* {
    margin: 0;
    padding: 0;
    text-decoration: none;
}

.nav {
    position: relative;
    top: 0;
    width: 100%;
    height: 60px;
    background-color: cornflowerblue;
    line-height: 60px;
    padding-left: 20px;
    /* font-family: 'YouYuan'; */
    font-weight: 700;
}

/* 题目 */
.title {
    color: #ccc;
    user-select: none;
}

.right {
    float: right;
    width: 270px;
    height: 60px;
    position: absolute;
    top: 0px;
    right: 0px;
    /* background-color: rgb(99, 180, 227); */
}

.right a {
    padding-right: 55px;
    padding-top: 30px;
    padding-bottom: 20px;
    padding-left: 20px;
    color: #ccc;
}

.right a:hover {
    background-color: rgb(130, 167, 234);
    border-radius: 10px;
}

/* 左边导航栏-功能项 */
.nav-left {
    position: fixed;
    left: 0;
    width: 13%;
    height: 100%;
    background-color: rgba(100, 149, 237, .6);
}

/* 左导航栏-功能 */
.nav-left a {
    display: block;
    width: 100%;
    height: 25px;
    text-align: center;
    padding-top: 18px;
    padding-bottom: 18px;
    font-size: 18px;
    color: #fff;
}

.nav-left a:hover {
    /* color: rgb(85, 138, 236); */
    background-color: cornflowerblue;
    border-radius: 5px;
}

/* 欢迎页面 */
.context {
    position: fixed;
    left: 13%;
    width: 100%;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    user-select: none;
    text-align: center;
    font-size: 20px;
}

.read {
    color: #fda085;
    font-size: 21px;

}